Math: Exponents, Roots, and Word Problems

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Multiple Choice

Faucet A fills a tank in 3 hours, and faucet B drains the tank in 9 hours. What fraction of the tank will be filled, if both the faucets are kept running for 1½ hours, and the tank is originally empty?

  1. 1/4
  2. 1/3
  3. 1/2
  4. 2/3
  5. 3/4
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